An obstacle is an object that makes it difficult for you to go where you want to go, because it is in your way.
E.g. The biggest obstacle in our way was a tree trunk in the road. 我們路上最大的障礙是橫在路上的一棵樹。
You can refer to anything that makes it difficult for you to do something as an obstacle. 障碍；困难；阻碍
E.g. A lack of qualifications can be a major obstacle to finding a job. 学历不足可能成为谋职的主要障碍。
E.g. There are still many obstacles and difficulties along the road of revolution. 在革命的道路上还有许多障碍物，还有许多困难。
Obstruction:（C.用作可数或不可数名词时）路障/阻塞物；障碍（物）
An obstruction is something that blocks a road, passage, entrance, etc. so that nothing can go along it, or the act of blocking something in this way 阻塞物，障碍物
E.g. John was irritated by drivers parking near his house and causing an obstruction. 约翰对那些在他家附近泊车堵住通道的司机感到恼火。
E.g. There's some kind of obstruction on the railway tracks. 铁轨上有障碍物。
(U 用作不可数名词) （通常指对生意、法律或政府的）阻挠，妨碍
Obstruction is the act of deliberately delaying something or preventing something from happening, usually in business, law, or government.
E.g. They were charged with obstruction of the police/of justice (= preventing the police/law courts from doing their jobs). 他們被指控妨碍警方执行公务/司法公正。
In addition, an obstruction is something that blocks a passage in your body. (体内的)梗阻
The boy was suffering from a bowel obstruction and he died. 这个男孩因患肠梗阻死去了。
What’s more, in sport an occasion when one player gets in the way of another and so prevents them from moving freely (体育项目中) 阻挡犯规
An obstacle is an object that makes it difficult for you to go where you want to go, because it is in your way.
E.g. The biggest obstacle in our way was a tree trunk in the road. 我們路上最大的障礙是橫在路上的一棵樹。
You can refer to anything that makes it difficult for you to do something as an obstacle. 障碍；困难；阻碍
E.g. A lack of qualifications can be a major obstacle to finding a job. 学历不足可能成为谋职的主要障碍。
E.g. There are still many obstacles and difficulties along the road of revolution. 在革命的道路上还有许多障碍物，还有许多困难。
Obstruction:（C.用作可数或不可数名词时）路障/阻塞物；障碍（物）
An obstruction is something that blocks a road, passage, entrance, etc. so that nothing can go along it, or the act of blocking something in this way 阻塞物，障碍物
E.g. John was irritated by drivers parking near his house and causing an obstruction. 约翰对那些在他家附近泊车堵住通道的司机感到恼火。
E.g. There's some kind of obstruction on the railway tracks. 铁轨上有障碍物。
(U 用作不可数名词) （通常指对生意、法律或政府的）阻挠，妨碍
Obstruction is the act of deliberately delaying something or preventing something from happening, usually in business, law, or government.
E.g. They were charged with obstruction of the police/of justice (= preventing the police/law courts from doing their jobs). 他們被指控妨碍警方执行公务/司法公正。
In addition, an obstruction is something that blocks a passage in your body. (体内的)梗阻
The boy was suffering from a bowel obstruction and he died. 这个男孩因患肠梗阻死去了。
What’s more, in sport an occasion when one player gets in the way of another and so prevents them from moving freely (体育项目中) 阻挡犯规
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